Algebra one

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Across
  1. 3. +
  2. 4. bottom of the fraction
  3. 9. top of fraction
  4. 10. <,>
  5. 12. x and y
  6. 13. sum
  7. 14. no sides
  8. 17. 3 sides
  9. 18. 1,2,3
  10. 19. 4 sides
  11. 22. -
  12. 23. difference
Down
  1. 1. does change
  2. 2. longest side
  3. 3. a coin toss
  4. 5. 2,3 = 6
  5. 6. does intersect
  6. 7. acute, right
  7. 8. 1.32/ -23.7
  8. 11. 1,3,5
  9. 13. <90
  10. 15. does not change
  11. 16. runs/runs
  12. 20. >90
  13. 21. never intersect